He also invented two machine guns and automatic shotgun, using gas
to cycle weapon. The repeating shotgun that John invented was the
primary reason for the break between Browning and Winchester. When
Winchester denied production of this gun, John Moses, packed a
sample of his shotgun into his luggage, crossed the Atlantic, and
negotiated an agreement for Fabrique National de Belgique (FN) to
produce his gun.

FN was then a young company in dire need of products to produce.
Browning's automatic shotgun revolutionized the hunting market.
This same shotgun was later produced in in the United States by
Remington, as their Model 11. Still later, variants of this shotgun
were produced by almost all of the large shotgun manufacturers,
including Savage, Franchi and Breda.